Pot life
Pot life is the time after mixing a two-part adhesive or resin during which it can still be applied. Beyond pot life the mix hardens in the container.
Ask Chalkline about this →Pot life is the period after mixing a two-component product (typically an epoxy resin or two-part polyurethane) during which the mixed material remains workable and can be applied. Once pot life expires, the mix begins to harden in the container and cannot be applied effectively. Attempting to use material past its pot life produces a weak or brittle joint.
Pot life is highly temperature-sensitive: a mix that has 30 minutes of pot life at 20 degrees C may have only 10 to 15 minutes at 30 degrees C. The practical rule is to mix only what can be applied within two-thirds of the stated pot life, allowing for any delays on the job. Waste from expired mixes is a cost and a waste disposal issue; mix small batches in hot weather.
Pot life differs from open time: pot life applies to two-part systems and is about the material in the container; open time applies to any adhesive already applied to the substrate.
Also known as: working life, usable life
Category: Adhesive application terms
Related
See also
Last updated: 2026-05-09. Verified: 2026-05-09. Quarterly review for currency.